public void TestNullCounts()
{
PrimitiveColumn <int> dataFrameColumn1 = new PrimitiveColumn <int>("Int1", Enumerable.Range(0, 10).Select(x => x));
dataFrameColumn1.Append(null);
Assert.Equal(1, dataFrameColumn1.NullCount);
PrimitiveColumn <int> df2 = new PrimitiveColumn <int>("Int2");
Assert.Equal(0, df2.NullCount);
PrimitiveColumn <int> df3 = new PrimitiveColumn <int>("Int3", 10);
Assert.Equal(0, df3.NullCount);
// Test null counts with assignments on Primitive Columns
df2.Append(null);
df2.Append(1);
Assert.Equal(1, df2.NullCount);
df2[1] = 10;
Assert.Equal(1, df2.NullCount);
df2[1] = null;
Assert.Equal(2, df2.NullCount);
df2[1] = 5;
Assert.Equal(1, df2.NullCount);
df2[0] = null;
Assert.Equal(1, df2.NullCount);
// Test null counts with assignments on String Columns
StringColumn strCol = new StringColumn("String", 0);
Assert.Equal(0, strCol.NullCount);
StringColumn strCol1 = new StringColumn("String1", 5);
Assert.Equal(0, strCol1.NullCount);
StringColumn strCol2 = new StringColumn("String", Enumerable.Range(0, 10).Select(x => x.ToString()));
Assert.Equal(0, strCol2.NullCount);
StringColumn strCol3 = new StringColumn("String", Enumerable.Range(0, 10).Select(x => (string)null));
Assert.Equal(10, strCol3.NullCount);
strCol.Append(null);
Assert.Equal(1, strCol.NullCount);
strCol.Append("foo");
Assert.Equal(1, strCol.NullCount);
strCol[1] = "bar";
Assert.Equal(1, strCol.NullCount);
strCol[1] = null;
Assert.Equal(2, strCol.NullCount);
strCol[1] = "foo";
Assert.Equal(1, strCol.NullCount);
strCol[0] = null;
Assert.Equal(1, strCol.NullCount);
}
public void TestPrimitiveColumnSort(int numberOfNulls)
{
// Primitive Column Sort
PrimitiveColumn <int> intColumn = new PrimitiveColumn <int>("Int", 0);
Assert.Equal(0, intColumn.NullCount);
intColumn.AppendMany(null, numberOfNulls);
Assert.Equal(numberOfNulls, intColumn.NullCount);
// Should handle all nulls
PrimitiveColumn <int> sortedIntColumn = intColumn.Sort() as PrimitiveColumn <int>;
Assert.Equal(numberOfNulls, sortedIntColumn.NullCount);
Assert.Null(sortedIntColumn[0]);
for (int i = 0; i < 5; i++)
{
intColumn.Append(i);
}
Assert.Equal(numberOfNulls, intColumn.NullCount);
// Ascending sort
sortedIntColumn = intColumn.Sort() as PrimitiveColumn <int>;
Assert.Equal(0, sortedIntColumn[0]);
Assert.Null(sortedIntColumn[9]);
// Descending sort
sortedIntColumn = intColumn.Sort(false) as PrimitiveColumn <int>;
Assert.Equal(4, sortedIntColumn[0]);
Assert.Null(sortedIntColumn[9]);
}
public void TestValidity()
{
PrimitiveColumn <int> dataFrameColumn1 = new PrimitiveColumn <int>("Int1", Enumerable.Range(0, 10).Select(x => x));
dataFrameColumn1.Append(null);
Assert.False(dataFrameColumn1.IsValid(10));
for (long i = 0; i < dataFrameColumn1.Length - 1; i++)
{
Assert.True(dataFrameColumn1.IsValid(i));
}
}